The ETA9650 is a highly efficient charger module circuit designed to convert AC or DC power into a suitable voltage and current for charging batteries or powering devices. Manufactured by ETA, this module integrates advanced features to ensure safe, reliable, and efficient charging. It is commonly used in portable electronics, power banks, IoT devices, and other battery-powered applications.
Explore Projects Built with charger module circuit
Use Cirkit Designer to design, explore, and prototype these projects online. Some projects support real-time simulation. Click "Open Project" to start designing instantly!
This circuit appears to be a solar-powered charging and power supply system with a battery backup. A TP4056 module is used for charging the 3.7V battery from the solar panel via a bridge rectifier, ensuring proper battery management. The system can power an LED and a motor, with a rocker switch to control the LED, and diodes are used to provide correct polarity and prevent backflow of current.
This circuit is a solar-powered battery charging system with an LED indicator. The solar panel charges a 3.7V battery through a TP4056 charging module, which is regulated by a 7805 voltage regulator and protected by diodes and a bridge rectifier. A rocker switch controls the LED indicator to show the charging status.
This circuit is a solar-powered battery charging and motor control system. The solar panel charges a 3.7V battery through a TP4056 charging module, which also powers an LED indicator via a rocker switch. Additionally, the circuit includes a motor driven by the battery, with a 7805 voltage regulator and bridge rectifier ensuring stable power delivery.
This circuit converts a 38.5V battery output to multiple lower voltage levels using a series of DC-DC converters and a power module. It includes an emergency stop switch for safety and distributes power to various components such as a relay module, USB ports, and a bus servo adaptor.
Integration into power banks and battery management systems
IoT devices requiring compact and efficient charging solutions
Technical Specifications
The ETA9650 charger module circuit is designed with robust technical capabilities to meet the demands of modern electronic devices. Below are the key specifications:
Key Technical Details
Parameter
Value
Input Voltage Range
4.5V to 28V
Output Voltage
Configurable (up to 4.2V)
Maximum Output Current
2A
Charging Algorithm
CC (Constant Current) / CV (Constant Voltage)
Efficiency
Up to 95%
Operating Temperature
-40°C to +85°C
Package Type
DFN-10 (3mm x 3mm)
Pin Configuration and Descriptions
The ETA9650 module features a 10-pin DFN package. Below is the pinout and description:
Pin Number
Pin Name
Description
1
VIN
Input voltage pin (4.5V to 28V)
2
GND
Ground pin
3
BAT
Battery connection pin
4
CHG_OK
Charging status indicator (active low)
5
ISET
Current setting pin (sets charging current)
6
EN
Enable pin (active high to enable charging)
7
NTC
Temperature monitoring pin for battery safety
8
STAT
Status pin (indicates charging state)
9
VREF
Reference voltage output
10
NC
No connection
Usage Instructions
The ETA9650 charger module circuit is straightforward to use in a variety of applications. Below are the steps and considerations for integrating it into your design:
How to Use the ETA9650 in a Circuit
Power Supply: Connect a DC power source (4.5V to 28V) to the VIN pin. Ensure the input voltage is within the specified range.
Battery Connection: Connect the positive terminal of the battery to the BAT pin and the negative terminal to GND.
Set Charging Current: Use a resistor on the ISET pin to configure the desired charging current. Refer to the datasheet for the resistor value corresponding to your required current.
Enable Charging: Pull the EN pin high to enable charging. If left floating, the module will remain disabled.
Monitor Status: Use the CHG_OK and STAT pins to monitor the charging status. These pins can be connected to LEDs or a microcontroller for visual or digital feedback.
Temperature Monitoring: Connect an NTC thermistor to the NTC pin for battery temperature monitoring. This ensures safe charging by halting the process if the battery temperature exceeds safe limits.
Important Considerations
Thermal Management: Ensure proper heat dissipation, especially when charging at high currents. Use a heatsink or place the module on a PCB with good thermal conductivity.
Battery Compatibility: Verify that the battery chemistry and voltage are compatible with the ETA9650's output.
Safety Features: Utilize the NTC pin for temperature monitoring to prevent overheating and potential damage to the battery.
Input Voltage: Avoid exceeding the maximum input voltage of 28V to prevent damage to the module.
Example: Using ETA9650 with Arduino UNO
The ETA9650 can be connected to an Arduino UNO to monitor charging status. Below is an example code snippet:
// Example code to monitor ETA9650 charging status with Arduino UNO
#define CHG_OK_PIN 2 // Connect CHG_OK pin of ETA9650 to Arduino digital pin 2
#define STAT_PIN 3 // Connect STAT pin of ETA9650 to Arduino digital pin 3
void setup() {
pinMode(CHG_OK_PIN, INPUT); // Set CHG_OK pin as input
pinMode(STAT_PIN, INPUT); // Set STAT pin as input
Serial.begin(9600); // Initialize serial communication
}
void loop() {
int chgStatus = digitalRead(CHG_OK_PIN); // Read CHG_OK pin status
int statStatus = digitalRead(STAT_PIN); // Read STAT pin status
// Print charging status to the serial monitor
if (chgStatus == LOW) {
Serial.println("Charging in progress...");
} else {
Serial.println("Charging complete or no battery connected.");
}
// Print additional status information
if (statStatus == HIGH) {
Serial.println("Battery is fully charged.");
} else {
Serial.println("Battery is still charging.");
}
delay(1000); // Wait for 1 second before checking again
}
Troubleshooting and FAQs
Common Issues and Solutions
Module Overheating
Cause: High charging current or insufficient heat dissipation.
Solution: Reduce the charging current by adjusting the resistor on the ISET pin. Ensure proper thermal management by using a heatsink or a well-designed PCB.
Battery Not Charging
Cause: Incorrect wiring or incompatible battery.
Solution: Verify all connections and ensure the battery voltage and chemistry are compatible with the ETA9650.
CHG_OK Pin Always High
Cause: No battery connected or battery already fully charged.
Solution: Check the battery connection and ensure the battery is not already at full capacity.
Input Voltage Out of Range
Cause: Input voltage below 4.5V or above 28V.
Solution: Use a power source within the specified input voltage range.
FAQs
Q: Can the ETA9650 charge multiple batteries in series?
A: No, the ETA9650 is designed for single-cell lithium-ion or lithium-polymer batteries. For multiple cells, use a battery management system (BMS) designed for series configurations.
Q: Is the ETA9650 suitable for fast charging?
A: Yes, the ETA9650 supports charging currents up to 2A, making it suitable for fast charging applications.
Q: How do I calculate the resistor value for the ISET pin?
A: Refer to the ETA9650 datasheet for the formula or table that correlates resistor values to charging current.
Q: Can I use the ETA9650 without the NTC pin?
A: While the NTC pin is optional, it is highly recommended to use it for battery temperature monitoring to ensure safe operation.
This concludes the documentation for the ETA9650 charger module circuit. For further details, refer to the official datasheet or contact ETA support.
Open Project in Cirkit Designer
